Question

solve for x : 55-4(x-5) = 20

Answer 1

Answer:

Step-by-step explanation:

1 Subtract 5555 from both sides.

-4(x-5)=20-55−4(x−5)=20−55

2 Simplify 20-5520−55 to -35−35.

-4(x-5)=-35−4(x−5)=−35

3 Divide both sides by -4−4.

x-5=\frac{-35}{-4}x−5=

​−4

​

​−35

​​  

4 Two negatives make a positive.

x-5=\frac{35}{4}x−5=

​4

​

​35

​​  

5 Add 55 to both sides.

x=\frac{35}{4}+5x=

​4

​

​35

​​ +5

6 Simplify \frac{35}{4}+5

​4

​

​35

​​ +5 to \frac{55}{4}

​4

​

​55

​​ .

x=\frac{55}{4}x=

​4

​

​55

​​

Answer 2

x=13.75

Step-by-step explanation:

$55-4(x-5)=20$

$55-4x+20=20$

$75-4x=20$

$-4x=20-75$

$4x=55$

$x=\frac{55}{4}$

$x=13.75$